초록 ▼

A process for obtaining fish meal which is essentially free of oil, as well as recovering valuable free polyunsaturated fatty acids, comprising hydrolyzing membrane phospholipids in comminuted fish with aqueous alkali solution, at a temperature which is not substantially above ambient, adding a stro

A process for obtaining fish meal which is essentially free of oil, as well as recovering valuable free polyunsaturated fatty acids, comprising hydrolyzing membrane phospholipids in comminuted fish with aqueous alkali solution, at a temperature which is not substantially above ambient, adding a strong acid to release free polyunsaturated fatty acids, recovering the free fatty acids from the aqueous phase by mechanical separation, and drying the aqueous phase.

대표청구항 ▼

A process for recovering substantially oil-free fish meal, consisting essentially of the steps of: comminuting fish or fish by-products; hydrolyzing substantially all of the membrane phospholipids present in the fish or fish by-products at a temperature not substantially higher than ambient temperat

A process for recovering substantially oil-free fish meal, consisting essentially of the steps of: comminuting fish or fish by-products; hydrolyzing substantially all of the membrane phospholipids present in the fish or fish by-products at a temperature not substantially higher than ambient temperature, without use of organic solvent or using an organic solvent in an amount which is not greater than that sufficient to catalyze the hydrolysis; adding a strong acid to the reaction product of said hydrolyzing step to release free fatty acids from the mixture and to form an organic phase, containing free fatty acids, and an aqueous phase, containing dissolved proteins; removing said free fatty acids by separating the organic phase from the aqueous phase; and drying the aqueous phase to recover a substantially oil-free fish meal.